JP2015189278A - Facility monitoring system, and information acquisition device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a facility monitoring system, an information acquisition device capable of satisfying two requests of acquiring measurement information while moving at high speed, and certainly acquiring a large quantity of accumulated measurement information measured by a sensor.SOLUTION: A facility monitoring system comprises: a plurality of measurement devices having a sensor which measures a state of a facility, a first storage part which stores accumulated data in which measurement information by the sensor is accumulated, and the measurement information by the sensor at a certain timing, a first radio communication part which transmits the measurement information or the accumulated data to an information acquisition device loaded on a movable body; and the information acquisition device having a speed detection part which detects speed of the movable body; a second radio communication part which receives the measurement information or the accumulated data, and a control part which determines whether or not the speed of the movable body is equal to or more than a predetermined threshold, and executes sequential acquisition processing of centralization acquisition processing for acquiring the accumulated data from either measurement device, or the sequential acquisition processing for sequentially acquiring the measurement information for each of the measurement devices when it is determined that the speed of the movable body is determined to be equal to or more than the predetermined threshold.

Description

  The present invention relates to an equipment monitoring system and an information acquisition device.

  As background art, there exists Unexamined-Japanese-Patent No. 2010-117837 (patent document 1). In Patent Document 1, a small roadside unit that communicates wirelessly or the like installed in the vicinity of a sensor collects measurement information of a sensor that detects the state of road equipment, and an inspection vehicle travels in the vicinity of the roadside unit. The measurement information is transmitted from the roadside unit to the in-vehicle unit of the inspection vehicle in accordance with an instruction such as a transmission time interval or a transmission information type from the in-vehicle unit that communicates by radio or the like mounted on the inspection vehicle.

JP 2010-117837 A

  In Patent Document 1 described above, measurement information of a sensor that detects the state of road equipment is transmitted to a traveling in-vehicle unit in accordance with an instruction such as a transmission time interval or a transmission information type from the in-vehicle unit mounted on the inspection vehicle. ing. The in-vehicle unit determines the time interval so that the information transmission signal from the road unit can be received a plurality of times based on the communicable distance from the road unit and the traveling speed of the moving body. For this reason, the maintenance management system of patent document 1 can acquire information, while a vehicle moves at high speed by controlling the transmission time interval and the frequency | count of transmission according to a moving speed. However, the measurement information itself acquired from the sensor does not change depending on the moving speed, and the amount of information acquired according to the user's request cannot be changed.

  Moreover, although the patent document 1 is monitoring the state of road equipment, the request | requirement which monitors the equipment state not only in a road but in a railroad facility is increasing. In such a system, it is necessary to provide an essential function to acquire measurement information while the vehicle moves at a high speed. On the other hand, there is a great demand for acquiring as much past measurement information as measured and accumulated by sensors as possible during periodic inspections or when an abnormality occurs in the equipment, and to grasp the past transition of the equipment state in detail. However, in the technique described in Patent Document 1 described above, the measurement information acquired from the sensor is constant as described above, and the viewpoint of increasing the amount of information is not described.

  Therefore, the present invention provides an equipment monitoring system and an information acquisition device capable of satisfying the two requirements of acquiring measurement information while moving at high speed and reliably acquiring a large amount of measurement information measured and accumulated by a sensor. The purpose is to provide.

  In order to solve the above-described problems and achieve the object, an equipment monitoring system according to the present invention includes a sensor for measuring a state of equipment, accumulated data in which measurement information by the sensor is accumulated, and the sensor at a certain timing. A plurality of measurement devices, each including: a first storage unit that stores measurement information according to the first measurement unit; and a first wireless communication unit that transmits the measurement information or the accumulated data to an information acquisition device mounted on a mobile body; A speed detection unit that detects the speed of the mobile body, a second wireless communication unit that receives the measurement information or the accumulated data, and determines whether or not the speed of the mobile body is equal to or higher than a predetermined threshold, When it is determined that the speed of the moving body is equal to or higher than a predetermined threshold, the concentrated acquisition process for acquiring the accumulated data from any of the measurement devices or the measurement device Of sequential acquisition process for sequentially acquiring the measurement information, and the equipment monitoring system comprising: a, and the information acquiring device and a control unit for executing said sequential acquisition process.

  Moreover, the information acquisition device according to the present invention is an information acquisition device mounted on a moving body, and stores the measurement information by a speed detection unit that detects the speed of the moving body and a sensor that measures the state of the equipment. A wireless communication unit that receives data or measurement information from the sensor at a certain timing from each of a plurality of measuring devices, and determines whether the speed of the moving body is equal to or higher than a predetermined threshold, and the moving body If it is determined that the speed is equal to or higher than a predetermined threshold, a central acquisition process for acquiring the accumulated data from any of the measurement devices or a sequential acquisition process for sequentially acquiring the measurement information for each of the measurement devices, And a control unit that executes the sequential acquisition process.

  According to the present invention, it is possible to satisfy two requirements: a function of acquiring information while moving at high speed, and a function of reliably acquiring a large amount of information measured and accumulated by the sensor.

It is a figure which shows an example of the equipment monitoring system in Example 1. FIG. It is a figure which shows the actual installation example of a measuring device and an information acquisition apparatus. 6 is a flowchart illustrating a transmission operation sequence of the measurement device (Example 1). 5 is a flowchart illustrating an operation sequence of the information acquisition apparatus (first embodiment). 10 is a flowchart illustrating an operation sequence of the information acquisition apparatus (second embodiment). It is a figure which shows an example of the equipment monitoring system in Example 3. FIG. 10 is a flowchart illustrating an operation sequence of the information acquisition apparatus (third embodiment). It is a figure which shows an example of the equipment monitoring system in Example 4. FIG. It is a figure which shows transition of the measuring device which can receive the information acquisition device in each time. It is a figure which shows an example of the equipment monitoring system in Example 5. FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, in the description of the drawings, the same portions are denoted by the same reference numerals and the description thereof is omitted.

  FIG. 1 is an example of an equipment monitoring system in the present embodiment, and includes a measuring device 1 and an information acquisition device 2. An actual installation example of the measurement device 1 and the information acquisition device 2 is shown in FIG. In FIG. 2, measuring devices 711 and 712 having the same configuration as the measuring device 1 are installed at certain intervals to measure the state of the railroad equipment, and the information acquisition device 2 is attached to a moving body such as the train 7. It is installed. The train 7 moves on the track 70, and the information acquisition device 2 receives the measurement information transmitted from the measurement devices 711 and 712, thereby grasping the state of the railway facility. The information acquisition device 2 needs to receive the measurement information transmitted from the measurement device 1 as reliably as possible while moving at high speed. Needless to say, if the moving speed of the information acquisition device 2 increases, the time during which signals transmitted from the measuring devices 721 and 722 can be received is shortened. Furthermore, since the train 7 moves, the signal level received by the information acquisition device 2 is unstable and greatly fluctuates. Moreover, since many measuring devices 1 are installed with respect to a railway installation, it is necessary to employ | adopt as cheap a communication part as possible. From these conditions, it is difficult to increase the communication speed between the measurement device 1 and the information acquisition device 2, and a precondition is inevitably required to reduce the amount of measurement information transmitted from the measurement device 1. .

  First, the internal configuration and operation of the measuring device 1 will be described. As shown in FIG. 1, the measuring device 1 includes a sensor 11, a control unit 12, a communication unit 13, a memory 14, and a memory 15. The sensor 11 is a sensor that measures the state of the railway facility, measures facility information in response to a measurement request from the control unit 12, and transmits the measured information (measurement information) to the control unit 12. The type of sensor can be selected as necessary as a numerical value indicating the state of the railway equipment, such as temperature, displacement, load, vibration, and the like.

  The communication unit 13 has a function of communicating with the information acquisition device 2 through the antenna 19 and transmits measurement information to the information acquisition device 2 in response to a transmission request from the control unit 12. The communication unit 13 also receives a control request from the information acquisition device 2 and transmits it to the control unit 12.

  The control unit 12 has a function of controlling the sensor 11, the communication unit 13, and the memories 14 and 15. The control unit 12 determines a transmission cycle in which the communication unit 13 transmits the measurement information obtained from the sensor 11 to the information acquisition device 2, issues a transmission request to the communication unit 13 for each transmission cycle, and transmits the measurement information to be transmitted. Are read from the memories 14 and 15 and transmitted to the communication unit 13. Further, the control unit 12 determines the measurement cycle of the sensor 11 and issues a measurement request to the sensor 11 for each measurement cycle, and the measurement information transmitted from the sensor 11 includes its contents (sequential acquisition operation state or concentrated acquisition described later). It is stored in the memories 14 and 15 according to which of the measurement information in the operating state). The measuring device 1 has an identification number uniquely assigned to each device, and the control unit 12 can store and refer to the identification number.

  Next, a storage method in the memories 14 and 15 will be described. As already described, in order for the information acquisition device 2 to reliably receive measurement information while moving, it is necessary to reduce the amount of measurement information. For this reason, it is conceivable that the information transmitted at each measurement cycle is limited to information measured at a certain timing, for example, limited to the latest measurement information and the past maximum value and minimum value. In the present embodiment, an operation state in which such limited measurement information is transmitted every transmission cycle is defined as an acquisition operation state sequentially. On the other hand, when there is a periodic inspection for investigating the state of equipment in detail or when an abnormality occurs in the equipment, there is a certain demand that the measuring device 1 wants to acquire past measurement information in detail. There is a need. For this reason, in this embodiment, the user can select an operation of transmitting all past measurement information to the information acquisition apparatus 2, and this state is defined as a centralized acquisition operation state.

  Here, in the memory 14, the latest value, the past maximum value, and the past maximum value for each piece of measurement information to be transmitted in the acquisition operation state, for example, measurement information such as temperature, displacement, load, vibration, etc. Only the minimum value is stored. On the other hand, all past measurement information is stored in the memory 15. The control unit 12 stores the measurement information for each measurement cycle in the latest information area of the memory 14, compares the past maximum value and the minimum value stored in the memory 14 with the latest measurement information, and determines the latest measurement information. If is the maximum value or the minimum value, the latest measurement information is overwritten and stored in the area. At the same time, the control unit 12 additionally stores measurement information in the memory 15. When the area of the memory 15 is full, the oldest measurement information is deleted and the latest measurement information is stored.

  Note that the memories 14 and 15 do not have to be physically separated, and the storage area may be sequentially divided into acquisition operation and all measurement information in the same memory. Alternatively, instead of dividing the memory into regions, a flag as information to be transmitted at the time of the sequential acquisition operation may be added to the measurement information obtained at the time of the sequential acquisition operation.

  Next, a transmission operation sequence of the control unit 12 of the measuring device 1 will be described with reference to FIG. First, in step S <b> 81, the control unit 12 reads out the measurement information stored in the memory 14 as a sequential acquisition operation and transmits it from the communication unit 13. When the information acquisition device 2 can receive the signal transmitted from the measurement device 1 (a transmission signal that is transmitted together with the measurement information or arbitrarily), the control unit 12 informs the information acquisition device 2 of the receipt notification and the measurement device 1. Since the control request is transmitted, it is determined in step S82 whether or not the communication unit 13 has received the receipt notification. If the receipt notification is not received (S82; No), it means that the information acquisition device 2 does not exist in the communicable range, so the process proceeds to step S85, and the measuring device 1 enters a standby state until the timing of the transmission cycle. . After the elapse of the transmission cycle, the process returns to step S81 again, and the measurement information defined by the sequential acquisition operation is repeated.

  When the receipt notification is received in step S82 (S82; Yes), in step S83, the control unit 12 determines whether or not a centralized acquisition operation request is sent as a control request from the information acquisition apparatus 2 (S83). When the centralized acquisition operation request is received (S83; Yes), all past measurement information stored in the memory 15 is read in step S84, and the communication unit 13 transmits the information to the information acquisition device 2. On the other hand, when the concentrated acquisition operation request is not received (S83; No), the process proceeds to step S85 and step S81, and the transmission of the measurement information defined by the acquisition operation is sequentially repeated. Regardless of the sequential acquisition operation and the concentrated acquisition operation, the measurement information to be transmitted includes the identification number of the measurement device 1 so that the measurement device 1 can be identified.

  As described above, the measurement device 1 transmits only the minimum measurement information stored in the memory 14 in the case of the sequential acquisition operation, and only when the concentrated acquisition operation request is received from the information acquisition device 2. All the past measurement information stored in is transmitted. With this operation, in the case of a sequential acquisition operation, the amount of transmission information can be reduced to enable reliable transmission and reception, and the power consumption of the wireless unit 13 can be suppressed by shortening the time required for communication. In the centralized acquisition operation, all past measurement information requested by the user can be transmitted.

  Next, returning to FIG. 1, the internal configuration and operation of the information acquisition apparatus 2 will be described. As illustrated in FIG. 1, the information acquisition apparatus 2 includes a speed detection unit 21, a control unit 22, a communication unit 23, an input unit 24, and a display unit 25. The speed detection unit 21 has a function of detecting the moving speed of the information acquisition device 2 and transmits the detected speed to the control unit 22. The communication unit 23 has a function of communicating with the measurement device 1 through the antenna 29 and receives measurement information transmitted from the measurement device 1. The communication unit 23 also transmits a control request transmitted from the control unit 22 to the measuring device 1.

  The input unit 24 has a function of accepting an input when the user inputs the operating state of the facility monitoring system and the identification number of the measuring device 1 to the information acquisition device 2. The display unit 25 has a function of displaying the measurement information received from the measurement device 1 and the operation state of the facility monitoring system to the user. The memory 26 has a function of storing measurement information received from the measurement device 1.

  The control unit 22 has a function of controlling the speed detection unit 21, the communication unit 23, the input unit 24, the display unit 25, and the memory 26. The control unit 22 stores the measurement information received by the communication unit 23 in the measurement information memory 26. In addition, the control unit 22 determines the operating state of a moving body such as a train from the input content received by the input unit 24 and the moving speed detected by the speed detecting unit 21, and transmits it to the measuring device 1 through the communication unit 23.

  Next, an operation sequence of the control unit 22 of the information acquisition apparatus 2 will be described with reference to FIG. First, in step S30, the input unit 24 receives selection of a sequential acquisition operation or a concentrated acquisition operation as an operation state from the user. When the sequential acquisition operation is selected, the process proceeds to step S38, where the measurement information transmitted from the measurement device 1 is received by the communication unit 23 and stored in the memory 26. Further, the control unit 22 also performs processing for transmitting a receipt notification from the communication unit 23 to the measuring device 1. Further, the received measurement information may be displayed on the display unit 25. When the information acquisition device 2 is moving, transmission signals from different measurement devices 1 can be received sequentially, so that the operation of step S38 is repeated.

  When the concentrated acquisition operation is selected in step S30, in step 31, the input unit 24 receives from the user the designation of the measurement apparatus 1 that wants to acquire all past measurement information. Specifically, the input unit 24 receives an input of an identification number of the measuring device 1 that is uniquely assigned to each device from the user. As an input method, an identification number may be directly input, or an identification number may be taken into the information acquisition apparatus 2 in advance by some method, displayed on the display unit 25, and selected by the user using the input unit 24. good. Alternatively, the identification numbers of the measuring devices 1 received by the information acquisition device 2 may be displayed in a list on the display unit 25 and may be selected by the user using the input unit 24.

  Next, in step S <b> 32, the speed detection unit 21 detects the moving speed of the information acquisition device 2.

  Subsequently, in step S33, the control unit 22 determines whether a moving body such as a train is in a stopped state. As a criterion for judgment, the speed of a moving body such as a train does not necessarily have to be 0. The required speed is obtained from the time required to receive the information stored in the memory 15 of the measuring device 1, and the value is used as a threshold value. You may judge. When it is determined in step S33 that the vehicle is not in a stopped state (S33; No), the process proceeds to step S37, and the control unit 22 displays a message indicating that the concentrated acquisition operation cannot be performed because the user is moving on the display unit 25. To complete the centralized acquisition operation.

  On the other hand, if it is determined in step S33 that the vehicle is in the stopped state (S33; Yes), the process proceeds to step S34, and the control unit 22 transmits a concentrated acquisition operation request to the measurement device 1 from the communication unit 23. As described above, when the measurement apparatus 1 receives the centralized acquisition operation request, the measurement apparatus 1 transmits all the past measurement information, so that the communication unit 23 receives the information in step S35. In step 36, the received information is stored in the memory 26.

  As described above, the information acquisition device 2 transmits a concentrated acquisition operation request to the measurement device 1 only when the moving speed is determined to be in the stopped state. By this operation, the information acquisition device 2 is prevented from moving before the reception of all the past measurement information stored in the memory 15 of the measurement device 1 is completed. Information can be received. In addition, when it is determined that the concentrated acquisition operation is not performed, the display unit 25 displays the warning so that the user can be prevented from moving. In addition, when the user selects a concentrated acquisition operation that is not intended by mistake in step 31, it is possible to notify that an incorrect selection has been made.

  In addition, the combination of the measurement device 1 and the information acquisition device 2 ensures that both the request is acquired for a request to acquire the minimum necessary measurement information while moving and a different request to acquire all past measurements. An achievable equipment monitoring system can be constructed. Moreover, although the railway facility has been described as an example of the installation destination of the measuring device 1, it is installed in a facility such as a road facility or a general building, and the information acquisition device 2 is mounted on a moving body such as an automobile or a bicycle. It is also possible to respond to different requests for acquiring the minimum necessary measurement information while moving and for acquiring all past measurements.

  Next, an operation sequence according to another embodiment of the information acquisition apparatus 2 will be described with reference to FIG. The same steps as those in FIG. 4 are denoted by the same reference numerals, and the operation is the same, so that the description thereof is omitted. In Example 1, when the centralized acquisition operation is selected in the information acquisition apparatus 2 and a moving body such as a train is stopped, all measurement information is transmitted and received regardless of the radio wave transmission state. However, depending on the radio wave transmission situation, even if the transmission / reception level is lowered, there is a case where the transmission / reception of measurement information is not affected. Therefore, such an example will be described below.

  When it is determined in step S33 that the vehicle is not in the stopped state (S33; No), the control unit 22 performs the operation of step S37 as in FIG. 3 and ends the concentrated acquisition operation. On the other hand, if it is determined in step S33 that the vehicle is stopped (S33; Yes), the process proceeds to step S41, and the communication unit 23 acquires the reception level at which the transmission signal of the measuring device 1 is received.

  Next, in step S42, the control unit 22 determines whether or not the reception level is equal to or higher than a preset threshold value. For this threshold value, a value obtained by adding a margin to the minimum reception level required when the communication unit 23 sequentially receives the acquisition operation may be set as the reception level of the concentrated acquisition operation. When it is determined that the reception level is not equal to or higher than the threshold (S42; No), the process proceeds to step S34. When it is determined that the reception level is equal to or higher than the threshold (S42; Yes), the process proceeds to step S43, and a communication unit 13 transmission level change request is transmitted from the communication unit 23 to the measurement device 1. The control unit 22 transmits the transmission level change request from the communication unit 23 by reducing the transmission output to the threshold value using the absolute value of the transmission level of the communication unit 13 or the attenuation amount from the current transmission level as a set value. These set values can be obtained by subtracting the threshold value used in step S42 from the reception level acquired in step S42.

  When the measurement device 1 receives a transmission level change request from the information acquisition device 2, the control unit 13 changes the transmission level of the communication unit 12 to the setting value specified in the transmission level change request. In the above description, threshold determination and transmission level control are performed using the reception level, but other parameters indicating a reception state that can be acquired from the communication unit 23 such as a signal noise ratio and a reception error rate of the communication unit 23 are used. However, similar control can be performed.

  As described above, when the information acquisition device 2 determines that the reception level is equal to or higher than the threshold, the information acquisition device 2 transmits a transmission level change request to the measurement device 1, and the measurement device 1 reduces the transmission output to the threshold. With this operation, when the radio wave transmission state between the measurement device 1 and the information acquisition device 2 is good, the transmission output of the measurement device 1 is suppressed to the extent that the reception of the information acquisition device 2 does not cause a problem. Power consumption can be reduced. In this case, it goes without saying that the operating time can be extended if the measuring apparatus 1 is battery-driven. In addition, by suppressing the transmission output of the measurement device 1, it is also possible to expect an effect of reducing interference with other communication devices that use the same frequency during execution of the concentrated acquisition operation.

  FIG. 6 shows a third embodiment. The same parts as those in FIG. 1 are denoted by the same reference numerals, and the configuration and operation are the same, so that the description thereof is omitted. The information acquisition device 2 illustrated in FIG. 6 has the same configuration as the information acquisition device 2 in the first embodiment, and further includes a memory 27 and a position detection unit 28.

  The position detection unit 28 has a function of detecting the current position of the information acquisition device 2 using a system that detects position information such as an access point by a GPS (Global Positioning System) or a wireless LAN (Local Area Network), for example. The detected position is transmitted to the control unit 22. The speed detection unit 21 and the position detection unit 28 may be a common component, and the speed may be detected from the position information or the position information may be detected from the speed information. In the memory 27, position information of the installation location of the measuring device 1 is stored in advance in association with the identification number of the measuring device 1. The control unit 22 has a function of controlling the speed detection unit 21, the communication unit 23, the input unit 24, the display unit 25, the memory 26, the position detection unit 28, and the memory 27.

Next, an operation sequence of the control unit 22 of the information acquisition apparatus 2 will be described with reference to FIG. The same steps as those in FIG. 4 are denoted by the same reference numerals, and the operation is the same, so that the description is omitted.
If it is determined in step S33 that the vehicle is stopped, the process proceeds to step S41, and the position detection unit 28 acquires the current position of the information acquisition device 2.

  Subsequently, in step S42, the control unit 22 determines whether or not the information acquisition device 2 exists at a position where the transmission signal of the measurement device 1 specified in step S31 can be received. Specifically, the control unit 22 reads the position information of the measuring device 1 having the corresponding identification number from the memory 27 based on the identification number specified in step S31, and acquires the position information and information acquisition device acquired in step S42. 2 is calculated. The control unit 22 may determine whether this calculated distance is within the communication distance range of the transmission device 1. In the determination, communication distance information that enables communication between these devices for each identification number is stored in advance in the memory 27, and the information may be used for the determination.

  In step S42, when it is determined that reception is not possible outside the communication distance range (S42; No), the control unit 22 proceeds to step S37. On the other hand, when it is determined in step S42 that reception is possible within the communication distance range (S42; Yes), the process proceeds to step S34, and a concentrated acquisition operation request is transmitted to the measurement device 1. If it is determined in step S42 that reception is not possible, the communication unit 23 of the activated information acquisition device 2 may be stopped. In this case, the power consumption of the information acquisition device 2 can be reduced.

  As described above, the information acquisition device 2 transmits a concentrated acquisition operation request to the measurement device 1 only when it is determined that its position is communicable with the measurement device 1. By this operation, it is possible to prevent an attempt to receive from the measuring device 1 present at a position where communication is impossible, and the information acquisition device 2 can reliably receive the measurement information.

  In the first embodiment, it has been described that it is determined whether or not the concentrated acquisition operation is performed based on the moving speed of the information acquisition device 2. However, when a system that relies on transmission information from an artificial satellite is used for speed detection, the speed cannot be detected in an environment where information from the artificial satellite such as a tunnel or an overhead cannot be received. The present embodiment provides a method for determining whether or not to perform a concentrated acquisition operation even in a situation where speed cannot be detected for some reason.

  FIG. 8 is a diagram showing a fourth embodiment. Three measuring devices 1 are installed in three locations, location 51, location 52, location 53, and information acquisition device 2 sequentially moves from time T0 to time T4 in the direction from location 51 to 53. Yes.

  As already described, the measurement devices 51, 52, and 53 repeat transmission of measurement information every transmission cycle. Since the range in which the transmission signals from the measurement devices 51, 52 and 53 can be received is determined, the measurement device capable of receiving the transmitted measurement information as the information acquisition device 2 sequentially moves from time T0 to T4. Will change over time. This change state is shown in FIG.

  FIG. 9 shows a measuring device that can be received by the information acquisition device 2 at each time. Only the measuring device 51 can be received at time T0. In the state at time T1 when the information acquisition device 2 moves, both transmission signals of the measurement devices 51 and 52 can be received. Next, at time T2, the signal from the measuring device 51 cannot be received, and only the transmission signal from the measuring device 52 can be received. Similarly, it is indicated that the measuring devices 52 and 53 can receive at time T3, and only the measuring device 53 can receive at time T4.

  In step S33 of FIG. 4, it is determined whether or not the information acquisition device 2 is in a stopped state. If the speed detection unit 21 cannot detect the speed, the measurement device transmitted from the receivable measurement device shown in FIG. The movement determination can be performed using the identification number. That is, the control unit 22 determines whether or not a receivable measuring device has been replaced, and can determine that the information acquisition device 2 has moved when the receivable measuring device has been replaced. In the example of FIG. 9, the measuring device 51 that has been receivable until time T2 is not receivable, and it can be determined that it is moving at this time. Similarly, it is possible to determine that the measuring device 52 that has been receivable until time T4 cannot be received and is moving at this time. Furthermore, it is possible to determine how much the moving speed is by checking such receivable measuring devices and the transition of the number thereof. For example, in the example shown in FIG. 9, the plurality of measuring devices that can be received between T0 and T2 is only once (only the timing at time T1). Can be determined to be slow. Then, the moving speed and position of the information acquisition device 2 are obtained from the time from the time T0 to the time T2 and the positions of the measuring devices 51 and 52, and it is determined whether or not the obtained value is equal to or greater than a threshold value at which the information acquisition device 2 is stopped. When the obtained value is equal to or greater than the threshold value, the acquisition operation is sequentially performed, and when the obtained value is less than the threshold value, the concentrated acquisition operation is performed.

  As described above, even when the speed detector 21 of the information acquisition device 2 cannot detect the speed, the movement state of the information acquisition device 2 is monitored by monitoring the measurement device 1 that can be received by the information acquisition device 2. And an acquisition operation adapted to the movement situation can be selected.

  FIG. 10 shows a fifth embodiment. The same parts as those in FIGS. 1 and 6 are denoted by the same reference numerals, and the configuration and operation are the same, and thus the description thereof is omitted. FIG. 10 shows a configuration in which the function of the information acquisition device 2 is realized by two devices, the information transfer device 200 and the portable information terminal 210.

  First, the configuration and operation of the information transfer apparatus 200 will be described. As illustrated in FIG. 10, the information transfer device 200 includes a control unit 201, a communication unit 202, and a memory 203 in addition to the communication unit 23 included in the information acquisition device 2 in the first embodiment.

  The memory 203 has a function of storing measurement information received from the measurement device 1. The communication unit 202 has a function of communicating with the portable information terminal 210 through the antenna 209. The communication unit 202 also receives a control request from the portable information terminal 210 and transmits it to the control unit 201. Note that the communication unit 23 and the communication unit 202 use different communication standards. The control unit 201 has a function of controlling the communication unit 23, the communication unit 202, and the memory 203. The control unit 201 stores the measurement information received by the communication unit 23 in the memory 203. In addition, a control request from the portable information terminal 210 is transmitted to the measuring device 1 through the communication unit 23.

  Next, the configuration and operation of the portable information terminal 210 will be described. As shown in FIG. 10, the portable information terminal 210 includes a public network communication unit 211 in addition to the speed detection unit 21, the input unit 24, the display unit 25, and the position detection unit 28 included in the information acquisition device 2 according to the first embodiment. A communication unit 212, a memory 213, and a control unit 214 are included.

  The communication unit 212 has a function of communicating with the information transfer apparatus 200 through the antenna 219. The public network communication unit 211 has a function of performing communication by connecting to the public communication network through the antenna 2110. The communication unit 212 and the public network communication unit 211 use different communication standards. The control unit 214 has a function of controlling the speed detection unit 21, the communication unit 212, the input unit 24, the display unit 25, the memory 26, the position detection unit 28, and the public network communication unit 211. The control unit 201 stores the measurement information received by the communication unit 212 in the memory 26. In addition, a control request to the information transfer apparatus 200 is transmitted through the communication unit 212.

  The information transfer device 200 is obtained by extracting the functions of the communication unit 23 and the memory 26 of the information acquisition device 2 as separate devices, and transmits information between the communication unit 23 and the control unit 22 in the information acquisition device 2 with the communication unit 202. It operates as if it was replaced by information transmission between the communication units 212. For example, in step S34 in FIG. 4, a concentrated acquisition operation request is transmitted to the measuring apparatus 1 from the communication unit 23 of the information acquisition apparatus 2. In the embodiment of FIG. The information is transmitted from the unit 212 to the information transfer device 200, and the communication unit 202 of the information transfer device 200 receives this and transmits it from the communication unit 23 to the measuring device 1.

  In step S35 of FIG. 4, the communication unit 23 of the information acquisition device 2 receives information from the measuring device 1 and stores it in the memory 26 in step 36. In the embodiment of FIG. The communication unit 23 receives information from the measuring device 1 and stores it in the memory 203. Then, it transmits to the portable information terminal 210 from the communication part 202 of the information transfer apparatus 200, and the communication part 212 of the portable information terminal 210 receives this, and memorize | stores it in the memory 213.

  As described above, by dividing the function of the information acquisition device 2 into the two devices of the information transfer device 200 and the portable information terminal 210, the communication unit 212 of the portable information terminal 210 allows the communication unit 23 of the information transfer device 200 to communicate. Any communication standard can be selected independently of the communication unit 13 of the measuring device 1. As already described, since the communication unit 23 and the communication unit 13 are selected for the purpose of reliably communicating a small amount of information even during high-speed movement, a general-purpose and inexpensive communication device such as a so-called wireless LAN is required specification. Is different. If the communication standard of the communication unit 21 can be arbitrarily selected, an inexpensive mass-produced device such as a normal mobile phone can be used as the portable information terminal 210. For this reason, the portable information terminal 210 can be procured at a very low cost, and the function of the information acquisition device 2 can be realized at a low cost.

  DESCRIPTION OF SYMBOLS 1 ... Measuring device, 11 ... Sensor, 12 ... Control part, 13 ... Communication part, 14 ... Memory, 15 ... Memory, 2 ... Information acquisition device, 21 ... Position / speed detection part, 22 ... Control part, 23 ... Communication part , 24 ... input unit, 25 ... display unit, 26 ... memory.

Claims (10)

A sensor for measuring the state of the equipment;
A first storage unit that stores accumulated data obtained by accumulating measurement information obtained by the sensor and measurement information obtained by the sensor at a certain timing;
A plurality of measurement devices having a first wireless communication unit that transmits the measurement information or the accumulated data to an information acquisition device mounted on a mobile body;
A speed detector for detecting the speed of the moving body;
A second wireless communication unit that receives the measurement information or the accumulated data;
It is determined whether or not the speed of the moving body is equal to or higher than a predetermined threshold, and when it is determined that the speed of the moving body is equal to or higher than a predetermined threshold, the concentration for acquiring the accumulated data from any of the measuring devices Of the acquisition process or the sequential acquisition process for sequentially acquiring the measurement information for each of the measurement apparatuses, the information acquisition apparatus having a control unit that executes the sequential acquisition process,
An equipment monitoring system comprising: The facility monitoring system according to claim 1,
The information acquisition apparatus includes a display unit and an input unit that receives selection of either the centralized acquisition process or the sequential acquisition process.
When the concentration acquisition process is selected and the control unit determines that the speed detected by the speed detection unit is equal to or greater than the predetermined threshold, a display unit indicates that the concentration acquisition process cannot be executed. Displayed on the
Equipment monitoring system characterized by this. The facility monitoring system according to claim 1 or 2,
The information acquisition device detects the reception level of the second wireless communication unit when the control unit performs the concentrated acquisition process, and determines whether or not the detected reception level is equal to or higher than a preset threshold value. If it is determined and the detected reception level is determined to be greater than or equal to a preset threshold, the transmission output of the second wireless communication unit is reduced.
Equipment monitoring system characterized by this. The facility monitoring system according to claim 3,
The measurement device reduces the transmission output of the first wireless communication unit when the information acquisition device determines that the detected reception level is equal to or higher than a preset threshold value,
Equipment monitoring system characterized by this. The equipment monitoring system according to any one of claims 1 to 4,
The information acquisition device associates and stores measurement device identification information for identifying the measurement device and position information indicating the position of the measurement device, and inputs the measurement device identification information. It has an input unit that accepts a position detection unit that detects the current position,
The control unit reads position information corresponding to the measurement device identification information received by the input unit from the second storage unit, and reads the position information and a current value detected by the position detection unit. And determining whether the information acquisition device is within a communicable range with the measurement device identified by the measurement device identification information, determining that the information acquisition device is within the communicable range, and When the speed detected by the speed detection unit is equal to or less than the predetermined threshold, the concentration acquisition process is executed.
Equipment monitoring system characterized by this. The facility monitoring system according to claim 5,
If the control unit determines that it is not within the communicable range, the control unit stops the second wireless communication unit.
Equipment monitoring system characterized by this. The facility monitoring system according to claim 5 or 6,
In each of the measurement devices, the first wireless communication unit transmits the measurement device identification information to the information acquisition device,
In the information acquisition device, the control unit determines whether one measurement device identification information received by the second wireless communication unit is replaced with another measurement device identification information, and the one measurement device identification information When it is determined that the other measurement device identification information has been replaced, the sequential acquisition process is executed.
Equipment monitoring system characterized by this. The facility monitoring system according to claim 7,
The control unit obtains the speed of the information acquisition device based on the time until the measurement device identification information is switched and the position information, and determines that the obtained speed is equal to or greater than the predetermined threshold. Execute the acquisition process,
Equipment monitoring system characterized by this. The equipment monitoring system according to any one of claims 1 to 8,
The information acquisition device includes: the second wireless communication unit; a third storage unit that stores the measurement information; and a third wireless communication unit that transmits the measurement information to a processing terminal having the control unit. An information transfer device, a fourth wireless communication unit that receives the measurement information from the transfer device, the control unit, and an information processing device that includes the speed detection unit.
Equipment monitoring system characterized by this. An information acquisition device mounted on a mobile object,
A speed detector for detecting the speed of the moving object;
A wireless communication unit that receives accumulated data obtained by accumulating measurement information by a sensor that measures the state of the facility, or measurement information by the sensor at a certain timing, from each of a plurality of measurement devices;
It is determined whether or not the speed of the moving body is equal to or higher than a predetermined threshold, and when it is determined that the speed of the moving body is equal to or higher than a predetermined threshold, the concentration for acquiring the accumulated data from any of the measuring devices Of the acquisition process or the sequential acquisition process for sequentially acquiring the measurement information for each of the measurement devices, a control unit that executes the sequential acquisition process;
An information acquisition device comprising:

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